Diamond drilling at MacPhersons Resources’ Nimbus-Boorara Silver-Gold-Zinc Project, 10km east of Kalgoorlie’s super-pit gold mine in Western Australia, continues to intersect silver-zinc rich massive and stringer sulphide and vein zones.
Preliminary silver assays have confirmed a deep extension to 512-542 metres depth of silver-zinc mineralization while G211 Lode intersections provide a depth extension of 210 metres, which equals a 130% increase.
New depth extensions to known silver and zinc lodes were intersected in all seven holes, which underpin underground mine model and shows lenses remain open at depth. A new silver lode was also intersected between the existing design stopes forming the ore reserve and named AG250.
Preliminary assays for the first three holes of the drill program undertaken in December and January are: 18.7 metres from 513 metres @ 87 grams/tonne silver equivalent including 3.6 metres from 513.5 metres @ 203 grams/tonne; 2 metres from 180 metres @ 1028 grams/tonne silver; 22.5 metres from 291.5 metres @ 77 grams/tonne silver; includes 5.2 metres from 294.8 metres @ 169 grams/tonne; 4.4 metres from 186 metres @ 110 grams/tonne silver; 20.0 metres from 206 metres @ 419 grams/tonne silver equivalent, includes 2.1 metres from 206 metres @ 528 grams/tonne and 6.3 metres from 219.7 metres @ 1139 grams/tonne; and 5.4 metres from 260.7 metres @ 88 grams/tonne silver, including 0.54 metres from 260.7 metres @ 644 grams/tonne.
The drilling to date has confirmed the silver and zinc lodes within the reserve model and that mineralization continues at depth and remains open;
The company continues the bankable feasibility study activities, including diamond drilling, on schedule for the completion of studies in mid-2014.
MacPhersons’ managing director Morrie Goodz says, “Assay results on the deep EIS hole demonstrates that intersections of silver-zinc lenses of economic grade, occur in deep strata more than double their previous known depths at Nimbus and these volcanic systems remain open.
“The value of this EIS co-funded diamond drilling has been enormous in that we have confirmed that suitable host rocks and mineralization occurs up to 600 metres below historical producing mines and offer long term underground mining opportunities.”